Github user wzhfy commented on a diff in the pull request:
https://github.com/apache/spark/pull/19774#discussion_r151689883
--- Diff:
sql/core/src/test/resources/sql-tests/inputs/describe-table-column.sql ---
@@ -24,6 +24,18 @@ DESC EXTENDED desc_col_table key;
DESC FORMATTED desc_col_table key;
+SET spark.sql.statistics.histogram.enabled=true;
+SET spark.sql.statistics.histogram.numBins=2;
+
+INSERT INTO desc_col_table values(1);
+INSERT INTO desc_col_table values(2);
+INSERT INTO desc_col_table values(3);
+INSERT INTO desc_col_table values(4);
--- End diff --
INSERT INTO desc_col_table values 1, 2, 3, 4
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